Problem with nitrogen cycle - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 10-10-2012, 10:52 PM Thread Starter
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Problem with nitrogen cycle

So I got a 20 gallon long tank 3 weeks ago, on bad advice and poor research I added 10 fish the next day. I lost 6 fish in two days, but the other four have held out pretty well. However I have been testing my water with the API master test kit. Today I tested and nitrite was finally above zero which I take to mean that the cycle has started, but nitrate is still 0, but the problem is that last week I had an ammonia level of .25 to .50 ppm, now today it tested at 2.0 ppm
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post #2 of 4 Old 10-10-2012, 11:24 PM
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Ammonia and nitrite will both rise before ammonia will start decreasing. Just give it time and keep up the water changes.
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post #3 of 4 Old 10-10-2012, 11:36 PM Thread Starter
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Should I be using something like "prime" or aquasafe that detoxifies ammonia, or is just using a plain water conditioner okay?

And is a 25% water change every other day sufficient?
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post #4 of 4 Old 10-11-2012, 07:21 AM
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Prime would be my choice .
Would also reduce feeding's to once each day, till the tank matures.
Daily 25 percent water change will not hurt anything or slow down the cycle to any measureable degree.
Four small fish in 20 gallon ?
Larger fish create more waste, which might make the need for larger percentage of water changed out according to test result's.
Reducing the amount of food going in the tank will help keep toxin's such as nitrites from getting too high between water changes.

The most important medication in your fish medicine cabinet is.. Clean water.

Last edited by 1077; 10-11-2012 at 07:25 AM.
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